docs: consolidate design change logs and refresh stale docs

docs/design/screens/account.md

@@ -51,7 +51,7 @@ Contents listed in the card: Profile (Username, display name, email, role and au
 | Requested | "We're preparing your export" · "This can take a few minutes. We'll email a link to marta@renew.example when it's ready." · "Export requested"; toast "Export requested" / "Check marta@renew.example in a few minutes." |
 | Already in progress | "An export is already being prepared" · "We'll email a link to marta@renew.example when it's ready." |
 
-Recommendation: direct download; async is the documented alternative and uses the export-ready email.
+Decision: direct download. An emailed export link is out of scope.
 
 ## Delete account
 Danger zone: "Danger zone" · "Delete your account and your personal data. This can't be undone." · "Delete my account".